A vector has components Ay = 12 m and Ay = 5.0 m. What is the magnitude of vector ?
A) 7.0 m
B) 13 m
C) 17 m
D) 21 m
E) 60 m
Question 2Habitability generally refers to an environment capable of sustaining
A) human life
B) plant life
C) microbial life only
D) any kind of life
Question 3Evidence that the recent rise in carbon dioxide concentration is due to human activity and not natural factors comes from
A) the amount of the rise in the atmospheric concentration tracks almost perfectly with the amount of carbon dioxide being released by industry
B) estimates of changes in the amount of carbon dioxide from natural sources such as volcanoes and the oceans can account for no more than about 1 of the rise in the atmospheric concentration
C) the ratio of carbon isotopes is consistent with the increase in carbon dioxide levels coming primarily from the burning of fossil fuels
D) all of these constitute evidence
Question 4Consider diving 30.0 m below the surface of the ocean (density 1.03 grams/cc).
(a) what is the gauge pressure at that depth, in atmospheres?
(b) what is the absolute pressure at that depth, in atmospheres?
(c) If you were in a submarine at that depth, what would be the total force on a 100. cm2 window?
Question 5Consider the Sun and its largest planet Jupiter. Where on the line joining them is their center mass? Is it within or outside the Sun? (Sun-Jupiter avg distance 778.million km; Solar mass/Jupiter mass = 1.0 103; Solar diameter 1.4 million km)
What will be an ideal response?